Thanks all in advance I just came across this war nickel just now showing my family, and realized that it has this strange, deep streak across the front. What exactly am I seeing? again thanks and sorry for any ignorance it just looks like a mint error and on a coin like this in its condition I want to make sure I’m not sleeping on this
I suspect it is a "lamination" error. The mint had a really tricky time getting the alloy of these war nickels correct, they have a lot of laminations.